Appreciate your concern with my fish load. My tank levels are like this. Nitri 0-.25, Nitra 0-.20, Amm 0, cal 420, PH 8.1, Phos 0-.02, alk 9-12. cop 0, sg 1.022-1.024. Change out 8 gal of water a week. Been doing the same for 10 months with great success. I also use additives as well. No...